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      1 /*
      2  * Copyright (C) 2009 Apple Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #ifndef GraphicsLayerClient_h
     27 #define GraphicsLayerClient_h
     28 
     29 #if USE(ACCELERATED_COMPOSITING)
     30 
     31 namespace WebCore {
     32 
     33 class GraphicsContext;
     34 class GraphicsLayer;
     35 #if PLATFORM(ANDROID)
     36 class RenderLayer;
     37 #endif
     38 class IntPoint;
     39 class IntRect;
     40 class FloatPoint;
     41 
     42 enum GraphicsLayerPaintingPhase {
     43     GraphicsLayerPaintBackground = (1 << 0),
     44     GraphicsLayerPaintForeground = (1 << 1),
     45     GraphicsLayerPaintMask = (1 << 2),
     46 #if PLATFORM(ANDROID)
     47     GraphicsLayerPaintBackgroundDecorations = (1 << 3),
     48 #endif
     49     GraphicsLayerPaintAll = (GraphicsLayerPaintBackground | GraphicsLayerPaintForeground | GraphicsLayerPaintMask)
     50 };
     51 
     52 enum AnimatedPropertyID {
     53     AnimatedPropertyInvalid,
     54     AnimatedPropertyWebkitTransform,
     55     AnimatedPropertyOpacity,
     56     AnimatedPropertyBackgroundColor
     57 };
     58 
     59 class GraphicsLayerClient {
     60 public:
     61     virtual ~GraphicsLayerClient() {}
     62 
     63 #if PLATFORM(ANDROID)
     64     virtual RenderLayer* owningLayer() const { return 0; }
     65 #endif
     66 
     67     // Callback for when hardware-accelerated animation started.
     68     virtual void notifyAnimationStarted(const GraphicsLayer*, double time) = 0;
     69 
     70     // Notification that a layer property changed that requires a subsequent call to syncCompositingState()
     71     // to appear on the screen.
     72     virtual void notifySyncRequired(const GraphicsLayer*) = 0;
     73 
     74     virtual void paintContents(const GraphicsLayer*, GraphicsContext&, GraphicsLayerPaintingPhase, const IntRect& inClip) = 0;
     75 
     76     virtual bool showDebugBorders() const = 0;
     77     virtual bool showRepaintCounter() const = 0;
     78 };
     79 
     80 } // namespace WebCore
     81 
     82 #endif // USE(ACCELERATED_COMPOSITING)
     83 
     84 #endif // GraphicsLayerClient_h
     85